Physics

# The value of $\dfrac{sin 50^o}{sin 30^o}$

##### SOLUTION
The value can be determined as:
$\dfrac{\sin(30+20)}{\sin(30)}$

$=\dfrac{(\sin30\times \cos20)+(\cos30\times sin20)}{\sin30}$

$=\cos20+(\cot30\times \sin20)$

$= 0.9396926207859 + (1.7320508075689)(0.3420201433257)$
$= 0.9396926207859 + 0.5923962654521$
$= 1.532088886238$

You're just one step away

Subjective Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
Enrolled Students 203

#### Realted Questions

Q1 Subjective Medium
$M L T ^ { - 2 } = k L ^ { a } \left( L T ^ { - 1 } \right) ^ { b } \left( M L ^ { - 1 } T ^ { - 1 } \right) ^ { c }$
where $k$  is a dimensionless constant. Taking dimensions on both sides,
find value a, b and c

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q2 Subjective Medium
Unit of potential ,V $=\frac { unit\quad of\quad work\quad W }{ unit\quad of\quad charge\quad Q }$ is ?

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q3 Single Correct Medium
Calculate the estimated and measured area of the given figure and hence, find the difference by comparing both the areas. (Each small square measures area $1$ unit square)
• A. $11$ sq. units
• B. $11.5$ sq. units
• C. $0.5$ sq. units
• D. $1$ sq. units

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q4 Single Correct Hard
The dimensional formula for wavelength is equivalent to (Where $E$ is the electric field, $B$ is the magnetic field, $L$ is Induction and $C$ is Capacitance ) :
• A. $\dfrac{E\sqrt{LC}}{B}$
• B. $\dfrac{E}{B\sqrt{LC}}$
• C. $\dfrac{B\sqrt{LC}}{E}$
• D. $\dfrac{B}{E\sqrt{LC}}$

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020

Q5 Single Correct Medium
Light years is the unit of:
• A. time
• B. length
• C. mass
• D. none of these

Asked in: Physics - Units and Measurement

1 Verified Answer | Published on 18th 08, 2020